三相异步电动机转子不动时,经由气隙传递到转子侧的电磁功率全部转化为转子铜损耗.
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You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?().
A. Your speed must be reduced to bare steerageway
B. A look-out is not required if the radar is on
C. Fog signals are only required when a vessel is detected by radar
D. The radar should always be kept on a short-range scale
某物流公司2005年1月1日购入A公司当日发行的面值为1000元,票面利率为10%的5年期债券500张。该公司按年计提利息,按直线法摊销溢价。计提债券利息和摊销溢价并编制会计分录。
关于髋部扭挫伤,叙述正确的是()
A. 直接暴力扭伤多见
B. 间接暴力扭伤多见
C. 扭伤后须严格固定
D. Thomas征阴性
E. 扭伤后出现弹性固定